Add department-specific radio channels (#9061)

* Add department-specific radio channels

This commit adds working department-specific radio channels, while
minimizing damage to the current codebase. It is expected that a future
refactor will clean this up a bit.

ChatSystem now has a RadioPrefix() method that recognizes
department-specific channels (e.g. ":e" and ":m") in addition to the
global channel (";"). It strips the prefix from the message and assigns
messages an integer representing the destination channel, if any.

IListen and IRadio now accept optional 'channel' arguments with this
channel in mind.

The ugly is that the integer channel number is hard-coded and also shows
up in chat.

Comms are not modeled at this time. You cannot break comms (yet).

All headsets have channels soldered into them. You cannot change
encryption keys to hop on new channels. Steal a headset instead.

* Remove debugging print

* Convert to prototypes

* Use prototype names in headset prototype

* Adjust list style

* Document prototype fields

* cringe

* some cleanup

* colours

* Remove alphas at least

* cc

Co-authored-by: Kevin Zheng <kevinz5000@gmail.com>

Content.Server/Actions/ActionsSystem.cs

@@ -1,4 +1,5 @@
 using Content.Server.Chat;
+using Content.Server.Chat.Systems;
 using Content.Shared.Actions;
 using Content.Shared.Actions.ActionTypes;
 using JetBrains.Annotations;

Content.Server/Administration/Commands/DSay.cs

@@ -1,4 +1,5 @@
 using Content.Server.Chat;
+using Content.Server.Chat.Systems;
 using Content.Shared.Administration;
 using Robust.Server.Player;
 using Robust.Shared.Console;

Content.Server/Administration/UI/AdminAnnounceEui.cs

@@ -1,6 +1,7 @@
 using Content.Server.Administration.Managers;
 using Content.Server.Chat;
 using Content.Server.Chat.Managers;
+using Content.Server.Chat.Systems;
 using Content.Server.EUI;
 using Content.Shared.Administration;
 using Content.Shared.Eui;

Content.Server/Advertise/AdvertiseSystem.cs

@@ -1,5 +1,6 @@
 using Content.Server.Advertisements;
 using Content.Server.Chat;
+using Content.Server.Chat.Systems;
 using Content.Server.Power.Components;
 using Content.Server.VendingMachines;
 using Robust.Shared.Prototypes;

Content.Server/AlertLevel/AlertLevelSystem.cs

@@ -1,5 +1,6 @@
 using System.Linq;
 using Content.Server.Chat;
+using Content.Server.Chat.Systems;
 using Content.Server.Station.Systems;
 using Robust.Shared.Audio;
 using Robust.Shared.Player;

Content.Server/Announcements/AnnounceCommand.cs

@@ -1,5 +1,6 @@
 using Content.Server.Administration;
 using Content.Server.Chat;
+using Content.Server.Chat.Systems;
 using Content.Shared.Administration;
 using Robust.Shared.Console;
 

Content.Server/Chat/Commands/LOOCCommand.cs

@@ -1,3 +1,4 @@
+using Content.Server.Chat.Systems;
 using Content.Shared.Administration;
 using Robust.Server.Player;
 using Robust.Shared.Console;

Content.Server/Chat/Commands/MeCommand.cs

@@ -1,3 +1,4 @@
+using Content.Server.Chat.Systems;
 using Content.Shared.Administration;
 using Robust.Server.Player;
 using Robust.Shared.Console;

Content.Server/Chat/Commands/SayCommand.cs

@@ -1,3 +1,4 @@
+using Content.Server.Chat.Systems;
 using Content.Shared.Administration;
 using Robust.Server.Player;
 using Robust.Shared.Console;

Content.Server/Chat/Commands/WhisperCommand.cs

@@ -1,4 +1,5 @@
-using Content.Shared.Administration;
+using Content.Server.Chat.Systems;
+using Content.Shared.Administration;
 using Robust.Server.Player;
 using Robust.Shared.Console;
 using Robust.Shared.Enums;

Content.Server/Chat/Systems/ChatSystem.Radio.cs

@@ -0,0 +1,88 @@
+using System.Linq;
+using System.Text.RegularExpressions;
+using Content.Server.Headset;
+using Content.Shared.Radio;
+using Robust.Shared.Player;
+using Robust.Shared.Prototypes;
+
+namespace Content.Server.Chat.Systems;
+
+public sealed partial class ChatSystem
+{
+    /// <summary>
+    /// Cache of the keycodes for faster lookup.
+    /// </summary>
+    private Dictionary<char, RadioChannelPrototype> _keyCodes = new();
+
+    private void InitializeRadio()
+    {
+        _prototypeManager.PrototypesReloaded += OnPrototypeReload;
+        CacheRadios();
+    }
+
+    private void OnPrototypeReload(PrototypesReloadedEventArgs obj)
+    {
+        CacheRadios();
+    }
+
+    private void CacheRadios()
+    {
+        _keyCodes.Clear();
+
+        foreach (var proto in _prototypeManager.EnumeratePrototypes<RadioChannelPrototype>())
+        {
+            _keyCodes.Add(proto.KeyCode, proto);
+        }
+    }
+
+    private void ShutdownRadio()
+    {
+        _prototypeManager.PrototypesReloaded -= OnPrototypeReload;
+    }
+
+    private (string, RadioChannelPrototype?) GetRadioPrefix(EntityUid source, string message)
+    {
+        // TODO: Turn common into a true frequency and support multiple aliases.
+        var channelMessage = message.StartsWith(':') || message.StartsWith('.');
+        var radioMessage = message.StartsWith(';') || channelMessage;
+        if (!radioMessage) return (message, null);
+
+        // Special case for empty messages
+        if (message.Length <= 1)
+            return (string.Empty, null);
+
+        // Look for a prefix indicating a destination radio channel.
+        RadioChannelPrototype? chan;
+        if (channelMessage && message.Length >= 2)
+        {
+            _keyCodes.TryGetValue(message[1], out chan);
+
+            if (chan == null)
+            {
+                _popup.PopupEntity(Loc.GetString("chat-manager-no-such-channel"), source, Filter.Entities(source));
+                chan = null;
+            }
+
+            // Strip message prefix.
+            message = message[2..].TrimStart();
+        }
+        else
+        {
+            // Remove semicolon
+            message = message[1..].TrimStart();
+            chan = _prototypeManager.Index<RadioChannelPrototype>("Common");
+        }
+
+        if (_inventory.TryGetSlotEntity(source, "ears", out var entityUid) &&
+            TryComp(entityUid, out HeadsetComponent? headset))
+        {
+            headset.RadioRequested = true;
+        }
+        else
+        {
+            _popup.PopupEntity(Loc.GetString("chat-manager-no-headset-on-message"), source, Filter.Entities(source));
+        }
+
+        return (message, chan);
+    }
+}

Content.Server/Chat/Systems/ChatSystem.cs

@@ -5,7 +5,6 @@ using Content.Server.Administration.Managers;
 using Content.Server.Chat.Managers;
 using Content.Server.GameTicking;
 using Content.Server.Ghost.Components;
-using Content.Server.Headset;
 using Content.Server.Players;
 using Content.Server.Popups;
 using Content.Server.Radio.EntitySystems;
@@ -23,22 +22,24 @@ using Robust.Shared.Console;
 using Robust.Shared.Network;
 using Robust.Shared.Player;
 using Robust.Shared.Players;
+using Robust.Shared.Prototypes;
 using Robust.Shared.Random;
 using Robust.Shared.Utility;
 
-namespace Content.Server.Chat;
+namespace Content.Server.Chat.Systems;
 
 /// <summary>
 ///     ChatSystem is responsible for in-simulation chat handling, such as whispering, speaking, emoting, etc.
 ///     ChatSystem depends on ChatManager to actually send the messages.
 /// </summary>
-public sealed class ChatSystem : SharedChatSystem
+public sealed partial class ChatSystem : SharedChatSystem
 {
     [Dependency] private readonly IConfigurationManager _configurationManager = default!;
     [Dependency] private readonly IChatManager _chatManager = default!;
     [Dependency] private readonly IChatSanitizationManager _sanitizer = default!;
     [Dependency] private readonly IAdminManager _adminManager = default!;
     [Dependency] private readonly IPlayerManager _playerManager = default!;
+    [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
     [Dependency] private readonly IRobustRandom _random = default!;
     [Dependency] private readonly IAdminLogManager _adminLogger = default!;
     [Dependency] private readonly ActionBlockerSystem _actionBlocker = default!;
@@ -56,6 +57,7 @@ public sealed class ChatSystem : SharedChatSystem
 
     public override void Initialize()
     {
+        InitializeRadio();
         _configurationManager.OnValueChanged(CCVars.LoocEnabled, OnLoocEnabledChanged, true);
 
         SubscribeLocalEvent<GameRunLevelChangedEvent>(OnGameChange);
@@ -63,6 +65,7 @@ public sealed class ChatSystem : SharedChatSystem
 
     public override void Shutdown()
     {
+        ShutdownRadio();
         _configurationManager.UnsubValueChanged(CCVars.LoocEnabled, OnLoocEnabledChanged);
     }
 
@@ -226,14 +229,18 @@ public sealed class ChatSystem : SharedChatSystem
         if (!_actionBlocker.CanSpeak(source)) return;
         message = TransformSpeech(source, message);
 
-        _listener.PingListeners(source, message);
+        (message, var channel) = GetRadioPrefix(source, message);
+
+        if (channel != null)
+            _listener.PingListeners(source, message, channel);
+
         var messageWrap = Loc.GetString("chat-manager-entity-say-wrap-message",
             ("entityName", Name(source)));
 
         SendInVoiceRange(ChatChannel.Local, message, messageWrap, source, hideChat);
 
         var ev = new EntitySpokeEvent(message);
-        RaiseLocalEvent(source, ev, false);
+        RaiseLocalEvent(source, ev);
         _adminLogger.Add(LogType.Chat, LogImpact.Low, $"Say from {ToPrettyString(source):user}: {message}");
     }
 
@@ -242,7 +249,6 @@ public sealed class ChatSystem : SharedChatSystem
         if (!_actionBlocker.CanSpeak(source)) return;
 
         message = TransformSpeech(source, message);
-        _listener.PingListeners(source, message);
         var obfuscatedMessage = ObfuscateMessageReadability(message, 0.2f);
 
         var transformSource = Transform(source);
@@ -410,34 +416,8 @@ public sealed class ChatSystem : SharedChatSystem
 
     private string SanitizeMessageCapital(EntityUid source, string message)
     {
-        if (message.StartsWith(';'))
-        {
-            // Special case for ";" messages
-            if (message.Length == 1)
-                return "";
-
-            // Remove semicolon
-            message = message.Substring(1).TrimStart();
-
         // Capitalize first letter
         message = message[0].ToString().ToUpper() + message.Remove(0, 1);
-
-            if (_inventory.TryGetSlotEntity(source, "ears", out var entityUid) &&
-                TryComp(entityUid, out HeadsetComponent? headset))
-            {
-                headset.RadioRequested = true;
-            }
-            else
-            {
-                _popup.PopupEntity(Loc.GetString("chat-manager-no-headset-on-message"), source, Filter.Entities(source));
-            }
-        }
-        else
-        {
-            // Capitalize first letter
-            message = message[0].ToString().ToUpper() + message.Remove(0, 1);
-        }
-
         return message;
     }
 

Content.Server/Communications/CommunicationsConsoleSystem.cs

@@ -2,6 +2,7 @@ using System.Globalization;
 using Content.Server.Access.Systems;
 using Content.Server.AlertLevel;
 using Content.Server.Chat;
+using Content.Server.Chat.Systems;
 using Content.Server.Popups;
 using Content.Server.RoundEnd;
 using Content.Server.Station.Systems;

Content.Server/Disease/DiseaseSystem.cs

@@ -5,6 +5,7 @@ using Content.Shared.Disease.Components;
 using Content.Server.Disease.Components;
 using Content.Server.Clothing.Components;
 using Content.Server.Body.Systems;
+using Content.Server.Chat.Systems;
 using Content.Shared.MobState.Components;
 using Content.Shared.Examine;
 using Content.Shared.Inventory;

Content.Server/GameTicking/GameTicker.cs

@@ -2,6 +2,7 @@ using Content.Server.Administration.Logs;
 using Content.Server.Administration.Managers;
 using Content.Server.Chat;
 using Content.Server.Chat.Managers;
+using Content.Server.Chat.Systems;
 using Content.Server.Database;
 using Content.Server.Ghost;
 using Content.Server.Maps;

Content.Server/Ghost/Components/GhostRadioComponent.cs

@@ -1,7 +1,9 @@
 using Content.Server.Radio.Components;
 using Content.Shared.Chat;
+using Content.Shared.Radio;
 using Robust.Server.GameObjects;
 using Robust.Shared.Network;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype.Set;
 
 namespace Content.Server.Ghost.Components
 {
@@ -12,27 +14,27 @@ namespace Content.Server.Ghost.Components
         [Dependency] private readonly IServerNetManager _netManager = default!;
         [Dependency] private readonly IEntityManager _entMan = default!;
 
-        [DataField("channels")]
+        [DataField("channels", customTypeSerializer: typeof(PrototypeIdHashSetSerializer<RadioChannelPrototype>))]
-        private List<int> _channels = new(){1459};
+        private HashSet<string> _channels = new();
 
-        public IReadOnlyList<int> Channels => _channels;
+        public void Receive(string message, RadioChannelPrototype channel, EntityUid speaker)
-
-        public void Receive(string message, int channel, EntityUid speaker)
         {
-            if (!_entMan.TryGetComponent(Owner, out ActorComponent? actor))
+            if (!_channels.Contains(channel.ID) || !_entMan.TryGetComponent(Owner, out ActorComponent? actor))
                 return;
 
             var playerChannel = actor.PlayerSession.ConnectedClient;
 
-            var msg = new MsgChatMessage();
+            var msg = new MsgChatMessage
-
+            {
-            msg.Channel = ChatChannel.Radio;
+                Channel = ChatChannel.Radio,
-            msg.Message = message;
+                Message = message,
                 //Square brackets are added here to avoid issues with escaping
-            msg.MessageWrap = Loc.GetString("chat-radio-message-wrap", ("channel", $"\\[{channel}\\]"), ("name", _entMan.GetComponent<MetaDataComponent>(speaker).EntityName));
+                MessageWrap = Loc.GetString("chat-radio-message-wrap", ("channel", $"\\[{channel.Name}\\]"), ("name", _entMan.GetComponent<MetaDataComponent>(speaker).EntityName))
+            };
+
             _netManager.ServerSendMessage(msg, playerChannel);
         }
 
-        public void Broadcast(string message, EntityUid speaker) { }
+        public void Broadcast(string message, EntityUid speaker, RadioChannelPrototype channel) { }
     }
 }

Content.Server/Headset/HeadsetComponent.cs

@@ -1,9 +1,13 @@
 using Content.Server.Radio.Components;
 using Content.Server.Radio.EntitySystems;
 using Content.Shared.Chat;
+using Content.Shared.Radio;
 using Robust.Server.GameObjects;
 using Robust.Shared.Containers;
+using Robust.Shared.Prototypes;
 using Robust.Shared.Network;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype.List;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype.Set;
 
 namespace Content.Server.Headset
 {
@@ -19,19 +23,16 @@ namespace Content.Server.Headset
 
         private RadioSystem _radioSystem = default!;
 
-        [DataField("channels")]
+        [DataField("channels", customTypeSerializer:typeof(PrototypeIdHashSetSerializer<RadioChannelPrototype>))]
-        private List<int> _channels = new(){1459};
+        public HashSet<string> Channels = new()
-
+        {
-        [ViewVariables(VVAccess.ReadWrite)]
+            "Common"
-        [DataField("broadcastChannel")]
+        };
-        public int BroadcastFrequency { get; set; } = 1459;
 
         [ViewVariables(VVAccess.ReadWrite)]
         [DataField("listenRange")]
         public int ListenRange { get; private set; }
 
-        public IReadOnlyList<int> Channels => _channels;
-
         public bool RadioRequested { get; set; }
 
         protected override void Initialize()
@@ -41,38 +42,40 @@ namespace Content.Server.Headset
             _radioSystem = EntitySystem.Get<RadioSystem>();
         }
 
-        public bool CanListen(string message, EntityUid source)
+        public bool CanListen(string message, EntityUid source, RadioChannelPrototype prototype)
         {
-            return RadioRequested;
+            return Channels.Contains(prototype.ID) && RadioRequested;
         }
 
-        public void Receive(string message, int channel, EntityUid source)
+        public void Receive(string message, RadioChannelPrototype channel, EntityUid source)
         {
-            if (Owner.TryGetContainer(out var container))
+            if (!Channels.Contains(channel.ID) || !Owner.TryGetContainer(out var container)) return;
-            {
+
-                if (!_entMan.TryGetComponent(container.Owner, out ActorComponent? actor))
+            if (!_entMan.TryGetComponent(container.Owner, out ActorComponent? actor)) return;
-                    return;
 
             var playerChannel = actor.PlayerSession.ConnectedClient;
 
-                var msg = new MsgChatMessage();
+            var msg = new MsgChatMessage
-
+            {
-                msg.Channel = ChatChannel.Radio;
+                Channel = ChatChannel.Radio,
-                msg.Message = message;
+                Message = message,
                 //Square brackets are added here to avoid issues with escaping
-                msg.MessageWrap = Loc.GetString("chat-radio-message-wrap", ("channel", $"\\[{channel}\\]"), ("name", _entMan.GetComponent<MetaDataComponent>(source).EntityName));
+                MessageWrap = Loc.GetString("chat-radio-message-wrap", ("color", channel.Color), ("channel", $"\\[{channel.Name}\\]"), ("name", _entMan.GetComponent<MetaDataComponent>(source).EntityName))
+            };
+
             _netManager.ServerSendMessage(msg, playerChannel);
         }
+
+        public void Listen(string message, EntityUid speaker, RadioChannelPrototype channel)
+        {
+            Broadcast(message, speaker, channel);
         }
 
-        public void Listen(string message, EntityUid speaker)
+        public void Broadcast(string message, EntityUid speaker, RadioChannelPrototype channel)
         {
-            Broadcast(message, speaker);
+            if (!Channels.Contains(channel.ID)) return;
-        }
 
-        public void Broadcast(string message, EntityUid speaker)
+            _radioSystem.SpreadMessage(this, speaker, message, channel);
-        {
-            _radioSystem.SpreadMessage(this, speaker, message, BroadcastFrequency);
             RadioRequested = false;
         }
     }

Content.Server/Headset/HeadsetSystem.cs

@@ -1,9 +1,13 @@
 using Content.Shared.Examine;
+using Content.Shared.Radio;
+using Robust.Shared.Prototypes;
 
 namespace Content.Server.Headset
 {
     public sealed class HeadsetSystem : EntitySystem
     {
+        [Dependency] private readonly IPrototypeManager _protoManager = default!;
+
         public override void Initialize()
         {
             base.Initialize();
@@ -14,8 +18,21 @@ namespace Content.Server.Headset
         {
             if (!args.IsInDetailsRange)
                 return;
-            args.PushMarkup(Loc.GetString("examine-radio-frequency", ("frequency", component.BroadcastFrequency)));
+            // args.PushMarkup(Loc.GetString("examine-radio-frequency", ("frequency", component.BroadcastFrequency)));
             args.PushMarkup(Loc.GetString("examine-headset"));
+
+            foreach (var id in component.Channels)
+            {
+                if (id == "Common") continue;
+
+                var proto = _protoManager.Index<RadioChannelPrototype>(id);
+                args.PushMarkup(Loc.GetString("examine-headset-channel",
+                    ("color", proto.Color),
+                    ("key", proto.KeyCode),
+                    ("id", proto.Name),
+                    ("freq", proto.Frequency)));
+            }
+
             args.PushMarkup(Loc.GetString("examine-headset-chat-prefix", ("prefix", ";")));
         }
     }

Content.Server/Nuke/NukeCodeSystem.cs

@@ -1,4 +1,5 @@
 using Content.Server.Chat;
+using Content.Server.Chat.Systems;
 using Content.Server.Communications;
 using Content.Server.Station.Systems;
 using Content.Shared.GameTicking;

Content.Server/Nuke/NukeSystem.cs

@@ -1,6 +1,7 @@
 using Content.Server.AlertLevel;
 using Content.Server.Chat;
 using Content.Server.Chat.Managers;
+using Content.Server.Chat.Systems;
 using Content.Server.Coordinates.Helpers;
 using Content.Server.Explosion.EntitySystems;
 using Content.Server.Popups;

Content.Server/Radio/Components/HandheldRadioComponent.cs

@@ -1,7 +1,12 @@
 using Content.Server.Chat;
+using Content.Server.Chat.Systems;
 using Content.Server.Radio.EntitySystems;
 using Content.Shared.Interaction;
 using Content.Shared.Popups;
+using Content.Shared.Radio;
+using Robust.Shared.Prototypes;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype.Set;
 
 namespace Content.Server.Radio.Components
 {
@@ -18,12 +23,16 @@ namespace Content.Server.Radio.Components
         private RadioSystem _radioSystem = default!;
 
         private bool _radioOn;
-        [DataField("channels")]
+        [DataField("channels", customTypeSerializer: typeof(PrototypeIdHashSetSerializer<RadioChannelPrototype>))]
-        private List<int> _channels = new(){1459};
+        private HashSet<string> _channels = new();
 
+        public int BroadcastFrequency => IoCManager.Resolve<IPrototypeManager>()
+            .Index<RadioChannelPrototype>(BroadcastChannel).Frequency;
+
+        // TODO: Assert in componentinit that channels has this.
         [ViewVariables(VVAccess.ReadWrite)]
-        [DataField("broadcastChannel")]
+        [DataField("broadcastChannel", customTypeSerializer: typeof(PrototypeIdSerializer<RadioChannelPrototype>))]
-        public int BroadcastFrequency { get; set; } = 1459;
+        public string BroadcastChannel { get; set; } = "Common";
 
         [ViewVariables(VVAccess.ReadWrite)] [DataField("listenRange")] public int ListenRange { get; private set; } = 7;
 
@@ -38,8 +47,6 @@ namespace Content.Server.Radio.Components
             }
         }
 
-        [ViewVariables] public IReadOnlyList<int> Channels => _channels;
-
         protected override void Initialize()
         {
             base.Initialize();
@@ -66,28 +73,30 @@ namespace Content.Server.Radio.Components
             return true;
         }
 
-        public bool CanListen(string message, EntityUid source)
+        public bool CanListen(string message, EntityUid source, RadioChannelPrototype prototype)
         {
+            if (!_channels.Contains(prototype.ID)) return false;
+
             return RadioOn &&
                    EntitySystem.Get<SharedInteractionSystem>().InRangeUnobstructed(Owner, source, range: ListenRange);
         }
 
-        public void Receive(string message, int channel, EntityUid speaker)
+        public void Receive(string message, RadioChannelPrototype channel, EntityUid speaker)
         {
-            if (RadioOn)
+            if (_channels.Contains(channel.ID) && RadioOn)
             {
                 Speak(message);
             }
         }
 
-        public void Listen(string message, EntityUid speaker)
+        public void Listen(string message, EntityUid speaker, RadioChannelPrototype channel)
         {
-            Broadcast(message, speaker);
+            Broadcast(message, speaker, channel);
         }
 
-        public void Broadcast(string message, EntityUid speaker)
+        public void Broadcast(string message, EntityUid speaker, RadioChannelPrototype channel)
         {
-            _radioSystem.SpreadMessage(this, speaker, message, BroadcastFrequency);
+            _radioSystem.SpreadMessage(this, speaker, message, channel);
         }
 
         void IActivate.Activate(ActivateEventArgs eventArgs)

Content.Server/Radio/Components/IListen.cs

@@ -1,3 +1,5 @@
+using Content.Shared.Radio;
+
 namespace Content.Server.Radio.Components
 {
     /// <summary>
@@ -8,8 +10,8 @@ namespace Content.Server.Radio.Components
     {
         int ListenRange { get; }
 
-        bool CanListen(string message, EntityUid source);
+        bool CanListen(string message, EntityUid source, RadioChannelPrototype channelPrototype);
 
-        void Listen(string message, EntityUid speaker);
+        void Listen(string message, EntityUid speaker, RadioChannelPrototype channel);
     }
 }

Content.Server/Radio/Components/IRadio.cs

@@ -1,11 +1,11 @@
+using Content.Shared.Radio;
+
 namespace Content.Server.Radio.Components
 {
     public interface IRadio : IComponent
     {
-        IReadOnlyList<int> Channels { get; }
+        void Receive(string message, RadioChannelPrototype channel, EntityUid speaker);
 
-        void Receive(string message, int channel, EntityUid speaker);
+        void Broadcast(string message, EntityUid speaker, RadioChannelPrototype channel);
-
-        void Broadcast(string message, EntityUid speaker);
     }
 }

Content.Server/Radio/EntitySystems/ListeningSystem.cs

@@ -1,4 +1,5 @@
 using Content.Server.Radio.Components;
+using Content.Shared.Radio;
 using JetBrains.Annotations;
 
 namespace Content.Server.Radio.EntitySystems
@@ -6,14 +7,15 @@ namespace Content.Server.Radio.EntitySystems
     [UsedImplicitly]
     public sealed class ListeningSystem : EntitySystem
     {
-        public void PingListeners(EntityUid source, string message)
+        public void PingListeners(EntityUid source, string message, RadioChannelPrototype channel)
         {
             foreach (var listener in EntityManager.EntityQuery<IListen>(true))
             {
+                // TODO: Listening code is hella stinky so please refactor it someone.
                 // TODO: Map Position distance
-                if (listener.CanListen(message, source))
+                if (listener.CanListen(message, source, channel))
                 {
-                    listener.Listen(message, source);
+                    listener.Listen(message, source, channel);
                 }
             }
         }

Content.Server/Radio/EntitySystems/RadioSystem.cs

@@ -1,6 +1,7 @@
 using System.Linq;
 using Content.Shared.Examine;
 using Content.Server.Radio.Components;
+using Content.Shared.Radio;
 using JetBrains.Annotations;
 
 namespace Content.Server.Radio.EntitySystems
@@ -23,20 +24,17 @@ namespace Content.Server.Radio.EntitySystems
             args.PushMarkup(Loc.GetString("handheld-radio-component-on-examine",("frequency", component.BroadcastFrequency)));
         }
 
-        public void SpreadMessage(IRadio source, EntityUid speaker, string message, int channel)
+        public void SpreadMessage(IRadio source, EntityUid speaker, string message, RadioChannelPrototype channel)
         {
             if (_messages.Contains(message)) return;
 
             _messages.Add(message);
 
             foreach (var radio in EntityManager.EntityQuery<IRadio>(true))
-            {
-                if (radio.Channels.Contains(channel))
             {
                 //TODO: once voice identity gets added, pass into receiver via source.GetSpeakerVoice()
                 radio.Receive(message, channel, speaker);
             }
-            }
 
             _messages.Remove(message);
         }

Content.Server/Roles/Job.cs

@@ -1,5 +1,6 @@
 using Content.Server.Chat;
 using Content.Server.Chat.Managers;
+using Content.Server.Chat.Systems;
 using Content.Shared.Roles;
 
 namespace Content.Server.Roles

Content.Server/RoundEnd/RoundEndSystem.cs

@@ -2,6 +2,7 @@ using System.Threading;
 using Content.Server.Administration.Logs;
 using Content.Server.Chat;
 using Content.Server.Chat.Managers;
+using Content.Server.Chat.Systems;
 using Content.Server.GameTicking;
 using Content.Shared.Database;
 using Content.Shared.GameTicking;

Content.Server/Salvage/SalvageSystem.cs

@@ -13,6 +13,7 @@ using Robust.Shared.Random;
 using Robust.Shared.Utility;
 using System.Linq;
 using Content.Server.Chat;
+using Content.Server.Chat.Systems;
 using Content.Server.Station.Systems;
 
 namespace Content.Server.Salvage

Content.Server/Speech/AccentSystem.cs

@@ -1,5 +1,6 @@
 using System.Text.RegularExpressions;
 using Content.Server.Chat;
+using Content.Server.Chat.Systems;
 
 namespace Content.Server.Speech
 {

Content.Server/Speech/SpeechNoiseSystem.cs

@@ -1,5 +1,6 @@
 using Robust.Shared.Audio;
 using Content.Server.Chat;
+using Content.Server.Chat.Systems;
 using Content.Shared.Speech;
 using Robust.Shared.Player;
 using Robust.Shared.Prototypes;

Content.Server/Station/Systems/StationSystem.cs

@@ -1,6 +1,7 @@
 using System.Linq;
 using Content.Server.Chat;
 using Content.Server.Chat.Managers;
+using Content.Server.Chat.Systems;
 using Content.Server.GameTicking;
 using Content.Server.Station.Components;
 using Content.Shared.CCVar;

Content.Server/StationEvents/Events/DiseaseOutbreak.cs

@@ -1,4 +1,5 @@
 using Content.Server.Chat;
+using Content.Server.Chat.Systems;
 using Content.Server.Disease.Components;
 using Content.Server.Disease;
 using Content.Server.Station.Systems;

Content.Server/StationEvents/Events/RandomSentience.cs

@@ -1,5 +1,6 @@
 using System.Linq;
 using Content.Server.Chat;
+using Content.Server.Chat.Systems;
 using Content.Server.Ghost.Roles.Components;
 using Content.Server.Mind.Commands;
 using Content.Server.Station.Systems;

Content.Server/StationEvents/Events/StationEvent.cs

@@ -2,6 +2,7 @@ using Content.Server.Administration.Logs;
 using Content.Server.Atmos.EntitySystems;
 using Content.Server.Chat;
 using Content.Server.Chat.Managers;
+using Content.Server.Chat.Systems;
 using Content.Server.GameTicking;
 using Content.Server.Station.Components;
 using Content.Server.Station.Systems;

Content.Server/StationEvents/Events/ZombieOutbreak.cs

@@ -1,6 +1,7 @@
 using Content.Server.Chat;
 using Robust.Shared.Random;
 using Content.Server.Chat.Managers;
+using Content.Server.Chat.Systems;
 using Content.Server.Station.Systems;
 using Content.Shared.MobState.Components;
 using Content.Shared.Sound;

Content.Shared/Radio/RadioChannelPrototype.cs

@@ -0,0 +1,26 @@
+using Robust.Shared.Prototypes;
+
+namespace Content.Shared.Radio
+{
+    [Prototype("radioChannel")]
+    public sealed class RadioChannelPrototype : IPrototype
+    {
+        /// <summary>
+        /// Human-readable name for the channel.
+        /// </summary>
+        [ViewVariables] [DataField("name")] public string Name { get; private set; } = string.Empty;
+
+        /// <summary>
+        /// Single-character prefix to determine what channel a message should be sent to.
+        /// </summary>
+        [ViewVariables] [DataField("keycode")] public char KeyCode { get; private set; } = '\0';
+
+        [ViewVariables] [DataField("frequency")] public int Frequency { get; private set; } = 0;
+
+        [ViewVariables] [DataField("color")] public Color Color { get; private set; } = Color.Lime;
+
+        [ViewVariables]
+        [IdDataFieldAttribute]
+        public string ID { get; } = default!;
+    }
+}

Resources/Locale/en-US/chat/managers/chat-manager.ftl

@@ -9,6 +9,7 @@ chat-manager-admin-ooc-chat-enabled-message = Admin OOC chat has been enabled.
 chat-manager-admin-ooc-chat-disabled-message = Admin OOC chat has been disabled.
 chat-manager-max-message-length-exceeded-message = Your message exceeded {$limit} character limit
 chat-manager-no-headset-on-message = You don't have a headset on!
+chat-manager-no-such-channel = There is no such channel!
 chat-manager-whisper-headset-on-message = You can't whisper on the radio!
 chat-manager-server-wrap-message = SERVER: {"{0}"}
 chat-manager-sender-announcement-wrap-message = {$sender} Announcement:

Resources/Locale/en-US/headset/headset-component.ftl

@@ -1,8 +1,9 @@
 # Chat window radio wrap (prefix and postfix)
-chat-radio-message-wrap = {$channel} {$name} says, "{"{"}0{"}"}"
+chat-radio-message-wrap = [color={$color}]{$channel} {$name} says, "{"{"}0{"}"}"[/color]
 
 examine-radio-frequency = It's set to broadcast over the {$frequency} frequency.
 
 examine-headset = A small screen on the headset displays the following available frequencies:
+examine-headset-channel = [color={$color}]:{$key} for {$id} ({$freq})[/color]
 
 examine-headset-chat-prefix = Use {$prefix} for the currently tuned frequency.

Resources/Prototypes/Entities/Clothing/Ears/headsets.yml

@@ -19,6 +19,10 @@
   name: cargo headset
   description: A headset used by the quartermaster and his slaves.
   components:
+  - type: Headset
+    channels:
+    - Common
+    - Supply
   - type: Sprite
     sprite: Clothing/Ears/Headsets/cargo.rsi
 
@@ -28,6 +32,17 @@
   name: centcomm headset
   description: A headset used by the upper echelons of Nanotrasen.
   components:
+  - type: Headset
+    channels:
+    - Common
+    - Command
+    - CentCom
+    - Engineering
+    - Medical
+    - Science
+    - Security
+    - Service
+    - Supply
   - type: Sprite
     sprite: Clothing/Ears/Headsets/centcom.rsi
 
@@ -37,6 +52,16 @@
   name: command headset
   description: A headset with a commanding channel.
   components:
+  - type: Headset
+    channels:
+    - Common
+    - Command
+    - Engineering
+    - Medical
+    - Science
+    - Security
+    - Service
+    - Supply
   - type: Sprite
     sprite: Clothing/Ears/Headsets/command.rsi
 
@@ -46,6 +71,10 @@
   name: engineering headset
   description: A headset for engineers to chat while the station burns around them.
   components:
+  - type: Headset
+    channels:
+    - Common
+    - Engineering
   - type: Sprite
     sprite: Clothing/Ears/Headsets/engineering.rsi
 
@@ -55,6 +84,10 @@
   name: medical headset
   description: A headset for the trained staff of the medbay.
   components:
+  - type: Headset
+    channels:
+    - Common
+    - Medical
   - type: Sprite
     sprite: Clothing/Ears/Headsets/medical.rsi
 
@@ -64,6 +97,11 @@
   name: medical research headset
   description: A headset that is a result of the mating between medical and science.
   components:
+  - type: Headset
+    channels:
+    - Common
+    - Medical
+    - Science
   - type: Sprite
     sprite: Clothing/Ears/Headsets/medicalscience.rsi
 
@@ -91,6 +129,10 @@
   name: science headset
   description: A sciency headset. Like usual.
   components:
+  - type: Headset
+    channels:
+    - Common
+    - Science
   - type: Sprite
     sprite: Clothing/Ears/Headsets/science.rsi
 
@@ -100,6 +142,10 @@
   name: security headset
   description: This is used by your elite security force.
   components:
+  - type: Headset
+    channels:
+    - Common
+    - Security
   - type: Sprite
     sprite: Clothing/Ears/Headsets/security.rsi
 
@@ -109,5 +155,9 @@
   name: service headset
   description: Headset used by the service staff, tasked with keeping the station full, happy and clean.
   components:
+  - type: Headset
+    channels:
+    - Common
+    - Service
   - type: Sprite
     sprite: Clothing/Ears/Headsets/service.rsi

Resources/Prototypes/Entities/Clothing/Ears/headsets_alt.yml

@@ -17,6 +17,16 @@
   id: ClothingHeadsetAltCommand
   name: command overear-headset
   components:
+  - type: Headset
+    channels:
+    - Common
+    - Command
+    - Engineering
+    - Medical
+    - Science
+    - Security
+    - Service
+    - Supply
   - type: Sprite
     sprite: Clothing/Ears/Headsets/command.rsi
   - type: Clothing
@@ -27,6 +37,10 @@
   id: ClothingHeadsetAltMedical
   name: medical overear-headset
   components:
+  - type: Headset
+    channels:
+    - Common
+    - Medical
   - type: Sprite
     sprite: Clothing/Ears/Headsets/medical.rsi
   - type: Clothing
@@ -37,6 +51,10 @@
   id: ClothingHeadsetAltSecurity
   name: security overear-headset
   components:
+  - type: Headset
+    channels:
+    - Common
+    - Security
   - type: Sprite
     sprite: Clothing/Ears/Headsets/security.rsi
   - type: Clothing
@@ -48,6 +66,10 @@
   name: syndicate overear-headset
   description: A syndicate headset that can be used to hear all radio frequencies. Protects ears from flashbangs.
   components:
+  - type: Headset
+    channels:
+    - Common
+    - Syndicate
   - type: Sprite
     sprite: Clothing/Ears/Headsets/syndicate.rsi
   - type: Clothing

Resources/Prototypes/radio_channels.yml

@@ -0,0 +1,66 @@
+- type: radioChannel
+  id: Common
+  name: "Common"
+  keycode: ";"
+  frequency: 1459
+
+- type: radioChannel
+  id: CentCom
+  name: "CentCom"
+  keycode: 'y'
+  frequency: 1337
+
+- type: radioChannel
+  id: Command
+  name: "Command"
+  keycode: 'c'
+  frequency: 1353
+  color: "#334e6d"
+
+- type: radioChannel
+  id: Engineering
+  name: "Engineering"
+  keycode: 'e'
+  frequency: 1357
+  color: "#efb341"
+
+- type: radioChannel
+  id: Medical
+  name: "Medical"
+  keycode: 'm'
+  frequency: 1355
+  color: "#52b4e9"
+
+- type: radioChannel
+  id: Science
+  name: "Science"
+  keycode: 'n'
+  frequency: 1351
+  color: "#d381c9"
+
+- type: radioChannel
+  id: Security
+  name: "Security"
+  keycode: 's'
+  frequency: 1359
+  color: "#de3a3a"
+
+- type: radioChannel
+  id: Service
+  name: "Service"
+  keycode: 'v'
+  frequency: 1349
+  color: "#9fed58"
+
+- type: radioChannel
+  id: Supply
+  name: "Supply"
+  keycode: 'u'
+  frequency: 1347
+  color: "#a46106"
+
+- type: radioChannel
+  id: Syndicate
+  name: "Syndicate"
+  keycode: 't'
+  frequency: 1213